武汉展览馆深基坑降水工程新方法浅析

本文以武汉展览馆深基坑降水工程为例，分析了其降水过程中新方法，新思路的应用，并在此基础上对武汉汉口地区深基坑降水问题提出了几点建议。     

如何提高我国现阶段网络远程教育质量

网络远程教育是随着计算机技术、多媒体技术、网络通信技术的发展而形成的一种新型教育方式.本文针对我国网络远程教育的现状,分析我国目前制约网络远程教育的客观问题,提出了一些看法和措施,旨在说明提高教学质量是确保网络远程教育发展的关键因素.     

TSP与PM10相关性及其应用探讨

对环境空气中TSP(滤膜重量法)和PM10(压电晶体仪器法)进行同步监测，通过19组的测定结果表明，两者之间存在相关关系，经一元线性吲归，得回归方程：Y=0．1591 2．3213x。并经相关系数显著性水平检验，表明在99．9％的置信水平下TSP和PM10线性相关非常显著。     

Prenatal diagnosis of sanfilippo disease type C using a simple fluorometric enzyme assay

A new fluorogenic substrate, 4-methylumbelliferyl β-D-glucosaminide, was used for the assay of acetyl CoA:glucosaminide N-acetyltransferase in chorionic villi, cultured villus cells, and amniocytes. Optimal conditions for the assay and the ranges of enzyme activity were established for the various types of fetal cells. This simple fluorometric assay provides a reliable method for early prenatal diagnosis of Sanfilippo disease type C which is more convenient than current methods using radiolabelled substrates. The method was applied to amniotic fluid cells and fetal fibroblasts from an at-risk pregnancy in which an affected fetus was diagnosed by two-dimensional electrophoresis of glycosaminoglycans in the amniotic fluid.     

水生态修复技术在城市河道污染治理工程中的应用

本文以瑞安丰湖河生态修复工程为例,探讨了组合型生态修复技术在河道水环境治理领域的应用效果。该项目采用生态浮床、微孔曝气、微生物菌剂等多种生态技术相结合的模式对受污染的城市河道进行生态修复。河道中的污染物首先可作为生态浮床中挺水植物生长所需营养物质,挺水植物的根系则可为微生物提供优良的生长环境,微孔曝气则大幅度提升河道水体的溶解氧(DO)浓度,从而进一步改善水体的透明度,促进挺水植物的成长、增强微生物的活性,最终整体恢复河道生态系统并使其形成良性循环。运行结果表明,主要目标水质指标COD_(Mn)和DO的改善程度分别为28%和292%,水体清澈度和透明度大大增加,黑臭消失,水体感官明显改善。     

Study on the cementitiousness of asbestos tailings

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饮食业油烟净化技术及影响因素

根据国内饮食业油烟净化技术发展情况和实际应用测试结果 ,就不同规模和排放浓度的饮食业油烟控制提出优化的处理工艺 ;并分析了影响处理效果的因素     

三峡库区1997年平水期水质同步监测的W值法评价

利用Ｗ值法对１９９７年５月５日上午１０时整在长江干流三峡库区段和嘉陵江、乌江进行的水质同步监测结果进行评价，分析了库区水质沿程分布情况，并与１９９６年同步监测结果进行了比较，提出控制库区水污染几项建议。     

Net Ecosystem Production of Boreal Larch Ecosystems on the Yenisei Transect

The study was carried out in the Turukhansk Research Station of Yenisei Transect (65^°46^′N, 89^°25^′E). Larch (Larix gmelinii (Rupr.) Rupr.) is the dominant overstory tree species. The research has been conducted on four permanent test plots in same-age mature (110-year old) and overmature (380-year old) post-fire larch stands of green moss and lichen groups of forest type. Carbon cycle parameters were assessed based on a biometric method. Quantitative analysis of carbon pools and fluxes shows that net ecosystem production of north taiga larch stands averages 32% of net primary production. Sink of atmospheric CO₂ makes 1.22 and 0.74 t C ha^{− 1} year^{− 1} for mature and overmature green moss larch stands, and 0.65 and 0.35 t C ha^{− 1} year^{− 1} for lichen type. Net carbon sink in the tree layer make up 9% of net primary production carbon, ground vegetation – 15%, and dead plant residues accumulation – 8% of atmospheric carbon uptake via photosynthesis.     

东牙溪水库水环境质量评价及保护措施

采用一种新的模糊评价法对东牙溪水库水质进行了富营养化评价，并针对污染现状提出了相应的保护措施。